This is a reproduction of an antique vintage/ deco ring from the original casts. I think this one was from around 1920 The filigree is incredible! It’s in oxidized sterling silver 925 to give it the blackened vintage look. CZ is AAAA top quality Signity CZ that looks just like a 4 carat 10mm diamond so it’s very believable. Has small blue sapphire side triangular shaped side accents. Size 6 but probably sizeable by your jeweler. Mint condition. Originally $199